Vehicle wheel and tire.



M. CLARK.

VEHICLE WHEEL AND TIRE. APPLICATION FILED 00:1. 11,1909. 993,028. Patented May 23, 1911.

.II JE movement in -a rapidly traveling vehicle is mnnvxmln CLARK, or cnrcaeo, ILL'INOIS.

VEHICLE WHEEL AND TIRE.

Specification of Letters Patent.

Patented May 23, 1911.

Application filed October 11, 1809. Serial No. 522,090.

To all whom it may concern:

Be it known that I, MELVILLE CLARK, a citizen of the United States, residing at Ohicag o, in the county of Cook and State of Illinois, have invented new and useful Improvements in Vehicle Wheels and Tires, of which the following is a specification, reference being had to the drawings forming a part thereof. I

The purpose of this invention 1s to provide an improved construction of a vehicle wheel having a cushioned or pneumatic or otherwise yielding tire, and is designed to provide means for retaining the cushioning tread element of the tire in the element with respect to which it is movable and is adapted to reduce the friction between the two parts in such movement. 7

It consists in the features of construction shown and described as indicated in the claims.

In the drawings: Figure 1 is a section radial with respect to the wheel transverse with respect to the tire and the telly of a wheel embodying this invention. Fig. 2 is a section at the line 2-2 on Fig. 1.

In the drawings, 1, represents the ordinary wood felly of a wheel, having bound against its opposite sides annular flange-like tire 30 members 2, .2, between which t ere is engaged and retained a cushioning tread member 3, which may encompass and retain between the annular flange members 2, an in-' fiatable pneumatic member 4, though the presence of this pneumatic member is not material to theinvention. For engaging the cushioning tread member 3, with the annular flange members 2, said tread member 3, has radial pockets 5, elongpted in a direction radial with respect to t e wheel, into which pockets abutments 6, project from the annular flange members 2, preventing the creeping of'the, tread member around the wheel. The abutments as a whole, that is including the roller'7, hereinafter more particularly mentioned, are oblong with their greater length radial with respect to the wheel but shorter inthat direction than the pockets so as to allow proper range of movement of the tread member 3, radially with respect to the wheel, as is necessary for yielding under the weight of the load for cushioning. This liable to occasion a severe friction between the sides of the pockets and the abutments, tending to wear away the material of the tread member 3, and also to heat it sometimes to an injurious degree.

To reduce the friction and prevent heating, each of the abutments 6 comprises an antifriction roller 7, whose axis is parallel to the axis of the wheel and whose diameter is a little mainder o the abutment measured circumferentially with respect to the wheel, so that the roller projects-beyond the surface of the abutment and makes the contact of the abutment with the wall of the pocket. Obviousl greater than thewidth of the rethe entire abutment might consist of the r0 1 and the'stud 8 upon which it is mounted, but there is considered to be some advantage in making the abutment, as a whole, oblong by providing what may be called the guardin portion ,at the inner side of the antifrictional rolls, that is at the side toward the center of the wheel, so that in case of any extreme tendency of the tread member to creep, the area of the guard portion of the roller will be embedded or impressed into the wallof the pocket only to the depth of its protrusion beyond the surface of said ardportion, and the area of said surface will be added to that of the embedded portion of the roll for com ression ofthe substance of the tread mem er in resisting the creeping tendency.

I claim 2-- 1.- Incl vehicle wheel, in combination with the felly, annular guard rims or flan es bound against the opposite sides of the fol y, and a cushioning tread member interposed between the guard rims; the tread member I guard rims; the tread member having lateral.

pockets elon ated radially with respect to the wheel, t

e guard rims having oblong abutments protruding into the pockets In-festimony'whefeof, I have hereunto set shorter than the length of the pockets, such my. hand at Ohicago, 1'llinois this 7th day abutments comprising each a rigid stud and of October, 1909.

an antifriction r011 mounted for rotation MELVILLE CLARK. 5 about an axis substantially parallel with the Witnesses:

plane of the wheel having its circumferential O. J. CHRISIUFFEL, periphery protruding beyond the stud. M. G. ADY.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of fiatents, i

' -'Washington, I). 0. 

